Macro jsonerr 

macro_rules! jsonerr {
    (meta=$meta:expr, code=$code:expr, message=$message:expr) => { ... };
    (meta=$meta:expr, code=$code:expr, message=$message:expr, payload=$payload:expr) => { ... };
    (meta=$meta:expr, code=$code:expr, message=$message:expr, payload=$payload:expr, origin=$origin:expr) => { ... };
    (meta=$meta:expr, code=$code:expr, message=$message:expr, origin=$origin:expr) => { ... };
    (code=$code:expr, message=$message:expr) => { ... };
    (code=$code:expr, message=$message:expr, payload=$payload:expr) => { ... };
    (code=$code:expr, message=$message:expr, payload=$payload:expr, origin=$origin:expr) => { ... };
    (code=$code:expr, message=$message:expr, origin=$origin:expr) => { ... };
}